This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A190673 #7 Nov 21 2013 12:50:09
%S A190673 7,11,22,26,37,41,52,63,67,78,82,93,97,104,108,119,123,134,138,149,
%T A190673 153,160,164,175,179,190,194,205,216,220,231,235,246,250,261,272,276,
%U A190673 287,291,302,306,313,317,328,332,343,347,358,362,369,373,384,388,399,403,414,425,429,440,444,455,459,470,481,485,496,500,511,515
%N A190673 Positions of 0 in A190672.
%C A190673 See A190672.
%t A190673 (See A190672.)
%t A190673 With[{r=Sqrt[3]},Flatten[Position[Table[Floor[(2n+1)r]-2Floor[n r]- Floor[r],{n,550}],0]]] (* _Harvey P. Dale_, Nov 11 2011 *)
%Y A190673 Cf. A190672.
%K A190673 nonn
%O A190673 1,1
%A A190673 _Clark Kimberling_, May 16 2011